Implications of IGM Physical Properties on Galactic Overdensity During the Late Reionization Epoch

Abstract

The reconstruction of the image of the epoch of reionization has been a broadly investigated topic, focusing on unveiling correlations between numerous factors. Yet these correlations are not clearly defined in different scenarios, while the correlations between important physical properties of the intergalactic medium (IGM) and local galactic overdensity could be interpreted as indications of the history of the rapid epoch of reionization at z = 6 8 . This paper investigates the correlations between galactic overdensity and IGM sightline opacity and lyman-α transmitted flux. While using observational evidence from various sources, including quasar lyman-α emission and sampled observations of galaxies, results from hydrodynamic simulation suites are also utilized extensively in providing detailed data samples. The direct correlation between the aforementioned factors and the reionization bubble theory is formulated and proposed as a potential generalization. However, there are limitations in refining the formulated theory. An insufficient level of proof and applications is examined. This work will benefit similar areas by providing potential applications for the investigation of galaxy evolution and the formation of macroscopic celestial structures, allowing extended theories and correlations to be conceived and applied.